beaterX project thread - Page 43

**goodhart** · 05-09-2011

:drool:

Wow, I never thought I'd see the day when scheides had a built motor, 1680's, etc haha!

Can't wait to see what this bish does on E85!!

**scheides** · 05-09-2011

Quote:

Originally Posted by goodhart

:drool:

Wow, I never thought I'd see the day when scheides had a built motor, 1680's, etc haha!

Can't wait to see what this bish does on E85!!

Heh, all I want is a healthy motor, a safe fuel, and a good tune. I don't think my priorities have changed that much, just those times ya know...they are a changin' :P

**scheides** · 05-09-2011

Nope, BBX I can shift at 6500 and the car is still plenty fun/fast. Half of the fun of having a super wide powerband though is just cranking on it and reeeeeeeeeeeeeeeevvvvvvvvvving it out faster faster faster woaaaaahooo! So yea I get what you mean revving higher.

The one thing I really want to work on the next time I go to the drag track is revving first gear higher. I think I could have picked up another tenth and with the extra power now it'll take some getting used to, but I have the valvetrain to do it now so why not. Also I was always scared to rev it too high for autoX but with the low gearing of the X I was sometimes hunting for which gear to be in; I think having a setup made to rev higher will make decisions like that easier, not to mention having more down-low torque thanks to the cams!

**mlomker** · 05-11-2011

Quote:

Originally Posted by scheides

I think having a setup made to rev higher will make decisions like that easier

The back straight at BIR could be run in 3rd to redline or it's a very brief shift into 4th before downshifting again. I usually upshift since my issues have made me disinclined to really thrash on it. I suspect it'd be faster there to let it rip, though.

**scheides** · 05-11-2011

Well I think I've settled on 1.39*stock maf for about perfect scaling for my car and the 3.5" maf. Ironically:

area of circle: pi*r*r
inner diameter(stock): 2.8" (r=1.4)
inner diameter(primo): 3.3" (r=1.65)

area (stock) = 1.4*1.4*3.14 = 6.15 sq inches
area (primo) = 1.65*1.65*3.14 = 8.55 sq inches

conversion ratio (primo/stock): 8.55/6.15= 1.39

Others had told me 1.5 so I went with 1.48 to start....gah.

Anyways, been playing with boost. Goal is to peak to ~26psi and hold at least 25psi at 8000rpm. It's *not* perfect, but I'm getting there

This is after about 3 revisions of testing.

(note: these pulls were started around 5000rpm, just for testing upper rpm boost...full pulls I will do when road conditions allow)

This is using my hybrid setup: hallman MBC inline with pierburg 3-port bcs. Seems to be working nicely

**Murlo26** · 05-11-2011

Quote:

Originally Posted by scheides

Well I think I've settled on 1.39*stock maf for about perfect scaling for my car and the 3.5" maf. Ironically:

area of circle: pi*r*r
inner diameter(stock): 2.8" (r=1.4)
inner diameter(primo): 3.3" (r=1.65)

area (stock) = 1.4*1.4*3.14 = 6.15 sq inches
area (primo) = 1.65*1.65*3.14 = 8.55 sq inches

conversion ratio (primo/stock): 8.55/6.15= 1.39

Others had told me 1.5 so I went with 1.48 to start....gah.

Anyways, been playing with boost. Goal is to peak to ~26psi and hold at least 25psi at 8000rpm. It's *not* perfect, but I'm getting there

This is after about 3 revisions of testing.

(note: these pulls were started around 5000rpm, just for testing upper rpm boost...full pulls I will do when road conditions allow)

This is using my hybrid setup: hallman MBC inline with pierburg 3-port bcs. Seems to be working nicely

So are you running the MBC from the 3 port to the wastegate? In an attempt to get more WGDC that way? Just trying to understand. I was considering doing that to try and hold some more boost after 7600rpms...or however I would need to set it up I guess, never got around to looking into it.

**goodhart** · 05-11-2011

Looking good man. So you're running 26-27 on pump gas? or has the E85 conversion started?

**scheides** · 05-11-2011

Quote:

Originally Posted by goodhart

Looking good man. So you're running 26-27 on pump gas? or has the E85 conversion started?

Not till next week, the new injectors are still in a box on my workbench. Yes this is just pump gas.

**scheides** · 05-11-2011

It's still plumbed exactly like this:

http://mitsustyle.com/forums/showthread.php?t=28224

BCS goes between the outlet of the MBC and the WGA. The sole purpose of this is to help eliminate boost taper that a MBC sees, and *hopefully* more boost = more whp but that is not always the case. We shall see come saturday

**scheides** · 05-13-2011

So, Primo came through for me with a last-minute surprise for the dyno day:

Introducing the Primo Performance 2.75" Evo X LICP

This is the coldside pipe on the X, wrapping around to the TB

The stock pipe is decent and I made great power on it, but I can't help but notice there's some subtle niceties that I really really like about this new, slightly bigger and smoother-bending pipe:

Mates right up to the 2.75" OD of the TB:

Utilizes stock mounting bolt w/ stock rubber mount:

Fits perfect! Comes with t-bolt clamps:

Got the factory air scoop to fit too!

Driving impressions:
holy hell, I honestly wasn't sure it'd make much of a difference. I was plesantly surprised to say the least! Off-boost in the 2500-4000rpm range the car feels more responsive and when boost kicks in I feel a definite bump in torque in the midrange!

The car feels great overall and while the boost curve is still not perfect, I'm able to hold 26psi at 8500rpm. PS I raised the rev-lmiter

See all tomorrow at DB!

**mlomker** · 05-13-2011

Nice looking piece.

**Kracka** · 05-13-2011

Very cool, hopefully they get one to me too sooner rather than later since I also have an upcoming dyno-day!

**Murlo26** · 05-13-2011

Nice, can't wait to see what you lay down at DB tomorrow. You aren't going first are you? I don't want to get up that early haha.

**scheides** · 05-13-2011

Quote:

Originally Posted by Murlo26

Nice, can't wait to see what you lay down at DB tomorrow. You aren't going first are you? I don't want to get up that early haha.

11am too early? LOL whatever dude!

I will go when its my turn, whenever that happens to be. Might be at 11, might be at 3, might be at 7pm, who knows.

**Murlo26** · 05-13-2011

11am is early when you are up until 3am or later.

I'll have to do an early friday tonight...must see dynoing.

**mlomker** · 05-13-2011

Quote:

Originally Posted by Murlo26

I'll have to do an early friday tonight...must see dynoing.

I'm showing up for lunch. Dyno day BBQ ftw.

**Murlo26** · 05-13-2011

Quote:

Originally Posted by mlomker

I'm showing up for lunch. Dyno day BBQ ftw.

There might not be any cars left to dyno by then, but lunch time is for sure and E85 conversion is a maybe

**Halon** · 05-13-2011

good job primo!

**scheides** · 05-15-2011

1680's installed. Physical install was a cinch, took maybe 20 minutes; the fuel rail is right on top/front on the X so this was completely painless.

Initial settings I had from the guy I got them from didn't work worth a crap, the car idled at 8:1 and sputtered and died. Tried some more settings published on evoM with again, no luck. Then I realized that mrfred had posted some values from a car he had done with a cobb AP.

2.625
1.395
0.825
0.660
0.600
0.555
0.540

he posted E85 scaling: 943
Pump scaling I guessed, ~1.3*943: 1329

Last summer tephra figured out that the original algorithm used to display latencies and I could apply that and use mrfred's values for the cobb car. (link: http://forums.evolutionm.net/evo-x-e...hm-change.html) Still no luck. Car starts and runs good for a few secs above 2000 then as soon as it goes below 1500 it just goes pig pig rich again.

My logger is goofed up for some reason, but I'm thinking that the ecu simply won't drop pulsewidth low enough, so I applied tephra's minimum IPW hack:
http://forums.evolutionm.net/evo-x-e...ion-patch.html

Dropped MinimumIPW down one notch from .040 to .032. flash, start car, bam, fukin starts perfect, revs to 2000-3000 w/o any stumbling or issues, and it idles like a champ. Took the car around the 'block', initial short-term fuel trims look fine so I give it a few brief wot runs, just around 4000, into a little boost to check afrs.

Sad news, wideband in the car is flatlined at 0v again. No knock on the wot runs though, so I guess I'll just be driving around nicely and checking fuel trims until I get a new sensor.

*edit* hit the recalibrate button for the LC-1 and it's come back to life. I'll be testing this setup a bit until the tank is dry....then it's time to sell my soul to the corn gods :P

**scheides** · 05-15-2011

Oh also, changed the oil today. 3100 miles on this oil, the car didn't burn a drop. I don't say it often enough, but I want to thank MAP for a stout shortblock and DB Performance for a solid head. And while I'm at it, CBRD Speed Factory for such a bad-ass 100% stock-appearing turbo!

We'll see how well it holds boost once we turn it up to ~30 for the e85 tune.